Removing and installing auxiliary air heater Air Top 3500 — VW

Removing and installing auxiliary air heater Air Top 3500
Note
A manufacturer's plate is fitted on the auxiliary air heater unit. This plate provides information about the type of auxiliary air heater installed in the vehicle
Fig.
.
Note
The auxiliary air heater Air Top 3500 with bracket must be removed only if the bracket is damaged.
Removing without bracket
Anchor
Special tools and workshop equipment required
Torque wrench
V.A.G 1410
Before beginning repair work, perform the following steps:
Remove rear right step insert.
General body repairs, interior
Rep. gr.
68
Interior equipment; Equipment; Removing and installing rear step insert
.
Remove bolts
1 to 6
from air duct.
Note
Observe tightening sequence of bolts when installing. Starting with position 1 to 6.
Remove right underbody trim
General body repairs, exterior
Rep. gr.
66
Underbody covers; Assembly overviews
Remove cover
1
.
Separate connectors
1
from auxiliary air heater.
CAUTION
The fuel system is pressurised.
Danger of injury through fuel spray.
Wear eye protection.
Wear protective gloves.
To release pressure, wrap a clean cloth around the connection and carefully loosen the connection.
Separate fuel line
arrow
from auxiliary air heater and seal fuel line.
Loosen clips
4
.
Remove bolts
1
.
Note
Do not remove bolts
1
completely.
Remove bolts
2
.
Remove auxiliary air heater
3
as shown in figure
A
.
Manufacturer's plate
Note
Only version Air Top 3500 is factory installed in Transporter 2004 ►.
Date of first use is entered on lower part of manufacturer's plate.
The heat exchanger can be used for 10 years and must be replaced after date has expired.
Removing without bracket
Before beginning repair work, perform the following steps:
Remove right underbody trim
General body repairs, exterior
Rep. gr.
66
Underbody covers; Assembly overviews
Remove cover
1
.
Separate connectors
1
from auxiliary air heater.
CAUTION
The fuel system is pressurised.
Danger of injury through fuel spray.
Wear eye protection.
Wear protective gloves.
To release pressure, wrap a clean cloth around the connection and carefully loosen the connection.
Separate fuel line
arrow
from auxiliary air heater and seal fuel line.
Remove exhaust system
Chapter
.
Loosen clip to air intake silencer at auxiliary air heater.
Release clips or cable ties on connecting pieces
1
to air ducts and push them in direction of
arrow
.
Unscrew collar nuts
3
.
Remove auxiliary air heater
1
from bracket
2
.
Installing
Install in reverse order.
Tightening torques
Component
Specified torque
6 bolts on air duct
3.5 Nm
Bolts for securing auxiliary heater to underbody
8 Nm
Collar nuts on auxiliary heater
8 Nm